import Vue from 'vue'
import VueRouter, { RouteConfig } from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'

Vue.use(VueRouter)

const routes: Array<RouteConfig> = [
  { path:'/',redirect:'/login' },
  { path:'/login',component:Login},
  { 
    path:'/home',
    component:Home,
    redirect:'/Welcome',
    children:[
      { path: '/welcome', component: Welcome },
      { path: '/users', component: Users},
      { path: '/rights', component: Rights},
      { path: '/roles', component: Roles},
      { path: '/categories', component: Cate}
    ]
  }
]

const router = new VueRouter({
  mode: 'history',
  base: process.env.BASE_URL,
  routes
})

//挂载路由导航守卫
router.beforeEach((to,from,next) => {
  //to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //   next（） 放行  next('/login')  强制跳转

  if (to.path === '/login') return next()
  // 获取token值
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login') 
  next()
})



export default router
